High-Speed Labelling for Asymmetric Objects Using Rotating Shuttles
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Solution Overview
Problem
Existing labelling systems struggle to apply labels to objects at high speeds, particularly when dealing with asymmetric cross-sections, leading to issues like label tearing or incomplete adhesion.
Innovation Solution
A high-speed labelling system using a conveyor system with a shuttle and rotation mechanism, where the object is rotated while a label is applied by an applicator that matches the speed and orientation of the object, utilizing a movable applicator or rotating belt to minimize relative velocities and ensure secure adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional labelling systems are used, then label application is simple, but labelling speed is low (only about 10 objects per minute)
Solution Approach 1:
The patent implements dynamic rotation of objects during the labelling process. The rotation mechanism allows objects to be turned at controlled speeds while labels are applied, enabling the system to handle high throughput (hundreds of objects per minute) by continuously processing objects in motion rather than stationary ones, thus resolving the contradiction between high productivity and device complexity
Solution Approach 2:
The labelling system is divided into separate functional modules: a conveyor system for transport, a rotation mechanism for object orientation, and a label application system. This segmentation allows each component to be optimized independently, achieving high-speed labelling of asymmetric objects while maintaining manageable system complexity through modular design
2Productivity
If high speed labelling is attempted, then throughput increases, but label adhesion reliability decreases (label tearing or incomplete adhesion)
Solution Approach 1:
The rotation mechanism dynamically adjusts object orientation and rotation speed to match the label application process. By controlling the rotational velocity and timing the label application to coincide with specific points in the rotation cycle, the system maintains reliable adhesion even at high throughput speeds, preventing label tearing and incomplete application
Solution Approach 2:
The system incorporates control mechanisms that monitor and adjust rotation speed and label application timing based on real-time conditions. This feedback control ensures that labels are applied at optimal moments during rotation, maintaining consistent adhesion quality across high-speed operation, thereby resolving the contradiction between throughput and reliability
3Adaptability or versatility
If conventional stationary labelling is used, then process is simple, but asymmetric cross-section objects cannot be labelled reliably
Solution Approach 1:
The rotation mechanism enables the system to handle asymmetric cross-section objects by dynamically adjusting object orientation during the labelling process. The controlled rotation allows labels to be applied at the correct orientation regardless of the object's asymmetric shape, providing adaptability to various object geometries while managing complexity through precise motion control
Solution Approach 2:
The rotation mechanism serves multiple functions: it orients asymmetric objects for proper label placement, enables high-speed processing, and accommodates various object shapes and sizes. This multi-functionality allows a single mechanism to handle diverse asymmetric cross-section objects, improving adaptability without proportionally increasing system complexity
Data Source
AI summary
A label can be applied to an object having an asymmetric cross section that is held on a moving shuttle of a linear motor conveyor. The label is first flagged to the object by affixing a first portion of the label to the object. The label is wrapped on to the object by an applicator by rotating the object by a motor on the shuttle. The applicator moves along with the shuttle, at least in an application zone and approximately matches the speed of the shuttle, or the speed of the shuttle and the tangential surface speed of the rotating object.